<?php 

isset($column_left) && $column_left  = trim($column_left);
isset($column_right) && $column_right  = trim($column_right);
 
if(!empty($column_left) && !empty($column_right) ){
	$SPAN = array(3, 6, 3);
} elseif(empty($column_left) && !empty($column_right) ){
	$SPAN = array(0, 9, 3);
} elseif(!empty($column_left) && empty($column_right) ){
	$SPAN = array(3, 9, 0);
}else {
	$SPAN = array(0, 12, 0);
}